Pivoting multiple coulmn values into multiple columns dynamically

Question

Hi,
i have found some topics related to 'pivot' in this forum. but my situation is a lit bit different.
I have a table like the below
create
table #temp
(id
int, code
varchar(8),
routing varchar(50))
insert
into #temp(id,code
,routing
values(1,    
'code1',     
'route1')
,(1,'code11','route11')
,(2,  
'code22',    
'route22')
,(2,  
'code222',   
'route222')
,(2,  
'code2333',  
'route2333')
,(2,  
'code2',     
'route2')
,(3,  
'code3',     
'route3'),
(4,   
'code4',     
'route4'),
(4,   
'code44',    
'route44')
ID
CODE
ROUTE
1
code1
route1
1
code11
route11
2
code22
route22
2
code222
route222
2
code2333
route2333
2
code2
route2
3
code3
route3
4
code4
route4
4
code44
route44
And I need to display the table below format including column names. And code/routing columns can repeat not more than 10 times.
id
code
routing
code
routing
code
routing
code
routing
1
code1
route1
code11
route11
2
code2
route2
code22
route22
code222
route222
code2333
route2333
3
code3
route3
4
code4
route4
code44
route44
I am using sql server 2012.
i have benefited alot from this forum. a big thank you to the forum.
I would appreciate  your help.

Answer 1

Refer below solution with PIVOT. You can extend by using Dynamic Pivot.
--create table #temp (id int, code varchar(8), routing varchar(50))
--insert into #temp (id,code ,routing ) values(1,'code1','route1')
--,(1,'code11','route11'),(2,'code22','route22'),(2,'code222','route222'),(2,'code2333','route2333')
--,(2,'code2', 'route2'),(3,'code3', 'route3'),(4,'code4','route4'),(4,'code44','route44')
;with cte1 as (
select *,row_number() over (partition by id order by code) rn
from #temp
),cte2 as (
select *, case
when id=id then 'code_' + cast(rn as varchar) end codeCol, case
when id=id then 'routing_' + cast(rn as varchar) end routingCol
from cte1
),cte3 as (
select id,code_1,routing_1,code_2,routing_2,code_3,routing_3, code_4,routing_4 from cte2
pivot(max(code) for codeCol in (code_1,code_2,code_3,code_4)) pvt
pivot(max(routing) for routingCol in (routing_1,routing_2,routing_3,routing_4) ) pvt1
select id,
max(code_1) code_1,max(routing_1) routing_1,
max(code_2) code_2,max(routing_2) routing_2,
max(code_3) code_3,max(routing_3) routing_3,
max(code_4) code_4,max(routing_4) routing_4
from cte3
group by id
For dynamic pivot technique refer below query sample,
DECLARE
@cols nvarchar(max),
@stmt nvarchar(max)
SELECT @cols = isnull(@cols + ', ', '') + '[' + T.[NAME] + ']' FROM (SELECT distinct [NAME] FROM PIVOTTEST) as T
SELECT @stmt = '
SELECT *
FROM PIVOTTEST as T
PIVOT
max(T.VALUE)
for T.[NAME] in (' + @cols + ')
) as P'
exec sp_executesql @stmt = @stmt
select * from PIVOTTEST
Regards, RSingh